CVE-2026-89627

Summary

In the Linux kernel, the following vulnerability has been resolved:

HID: roccat: free buffered reports when destroying device

roccat_report_event() duplicates each report with kmemdup() and stores the allocation in a circular-buffer slot. The allocation is released only when that slot is reused.

The device destruction paths free struct roccat_device without releasing reports still stored in cbuf[]. This makes those allocations unreachable and leaks up to ROCCAT_CBUF_SIZE report buffers per device.

Add a small destructor that frees every buffered report before freeing the device, and use it in both paths that can destroy a registered device.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux206f5f2fcb5ff5bb0c60f9e9189937f3ca03e378 < cebb20b9a29cfc90bf56e54337333084f85a69ddaffected
LinuxLinux206f5f2fcb5ff5bb0c60f9e9189937f3ca03e378 < 690da9177e64bcfda2f4c0b5b8465178e4a236d8affected
LinuxLinux206f5f2fcb5ff5bb0c60f9e9189937f3ca03e378 < b3cc411daa50b39ba5706492a80a5a0804d9c85faffected
LinuxLinux206f5f2fcb5ff5bb0c60f9e9189937f3ca03e378 < 4cb3ff31d237ad1f515455c497ef07d7172d912baffected
LinuxLinux206f5f2fcb5ff5bb0c60f9e9189937f3ca03e378 < 943b8dc2c6044c01e36395f51bb809a4b6bdfd22affected
LinuxLinux206f5f2fcb5ff5bb0c60f9e9189937f3ca03e378 < da00eac19feef209c9591e48c860afc2014603beaffected
LinuxLinux206f5f2fcb5ff5bb0c60f9e9189937f3ca03e378 < fbb5a60f5c31b5625f0d89a79912fbcb2559289baffected
LinuxLinux206f5f2fcb5ff5bb0c60f9e9189937f3ca03e378 < bbff0ccbff360a5498075525005f6a913239a3d7affected
LinuxLinux2.6.35affected
LinuxLinux0 < 2.6.35unaffected
LinuxLinux5.10.270 <= 5.10.*unaffected
LinuxLinux5.15.221 <= 5.15.*unaffected
LinuxLinux6.1.188 <= 6.1.*unaffected
LinuxLinux6.6.157 <= 6.6.*unaffected
LinuxLinux6.12.109 <= 6.12.*unaffected
LinuxLinux6.18.50 <= 6.18.*unaffected
LinuxLinux7.2.4 <= 7.2.*unaffected
LinuxLinux7.3-rc1 <= *unaffected

Weaknesses

References